摘要
针对目前无人机三相静止变流器存在谐波成份高,直接影响整个惯导系统精度的问题,提出了一种新型拓扑结构的航空三相静止变流器模型。采用离散模拟器件结合推挽放大电路形成拓扑结构,系统由正弦波振荡电路、移相电路、推挽放大电路及反馈电路组成。介绍了各电路的工作原理及主要参数计算,该拓扑结构具有开关导通损耗小、效率高、可靠性高等优点。利用Saber数模混合软件进行了仿真实验,通过采用Newton-Raphson,Katzenelson迭代求解与变步长结合进行求解运算。通过对比仿真与试验结果可知,输出结果符合系统的设计要求,能够满足无人机配电系统的实际需要,同时也证明了该设计的合理性和有效性。
A novel topology structure of three-phase aviation static inverter is proposed.The circuit system is constituted of sine wave oscillator circuit,phase-shifting circuit and push-pull amplifier for solving the wave distortion of the output voltage.The work principle of each circuitry and the calculation of main parameters are introduced.The topology structure has the advantages such as low switch conduction loss,high efficiency and reliability,then it is simulated by Saber.The simulative results show that the output results accord with the demand of the system design and satisfy requirement in UAV.Simuhaneously, rationality and validity of the design are proved.
出处
《电力电子技术》
CSCD
北大核心
2009年第6期15-17,共3页
Power Electronics
关键词
变流器
振荡器
移相
推挽/三相静止变流器
converter
oscillator
phase-shifting
push-pull / three-phase static converter
